Flush-valve foe i



W. B. CAMPBELL.

FLUSH VALVE FOR FLUSHING TANKS.

APPLICATION FILED JAN-31.1914.

1,193,760. PatentedAug, 8, 1916.

i z'a'. I I

' terial for float valves.

pix

WILLIAM B. CAMPBELL, 01? GADSDEN, ALAE-Ah'il FLUSH-VALVE FOE FLUSHING-TANKS.

Specification. of Letters Patent.

Patented 8,

Application fileL January 31, 1914. Serial No. 815,771.

-bell, a citizen. of the United States, residing Gadsden, in county of Etowah and S ts-to of Alabama, ha ve invented certain new and useful Improvements in Flush- Valves for l lushing-llanks, of which the following is a specificaltion.

My invention relates. to an improvement in flush valves for flushing-tanks, and it consists in a buoyant flush-valve made of glass, this being used in connection with a flushing-tank having a valve-seat located at the flush outlet at a point on a lower plane than the remaining portion of the bottom of the tank.

in the accompanying drawing:-Figure l is a sectional view through a flushingtanli', and Fig. 2 is .a modification; and Fig.3 is a modification.

F is my improved flush-valve. lhis is made of vitreous material, such as glass, and I usually prefer to make it hollow so that it will be buoyant and float when released from its seat S.

My years of experience in this art have convinced me that glass is the best ma-- experiments toprove this, and I am not aware that buoyant fiush valveshave ever been made of glass.

Valves of this character are easily and cheaply made. [They can be made superficially perfect. and when used with a seat, the two have an aflinity so that the contact between the two is as near perfect as two contacting surfaces can he made.

A flush valve of glass is practically indestructible, that is to say as far as its oporation in a flush-tank is concerned as it is not susceptible to corroding influences, and does not and need not accumulate on its surface any extraneous material, which, in process. of time. all other terms of valves in flushing-tanks do.

The tank T oi any approved construction. but its bottom slopes more or less from all sides to the flush outlet 0. and the valve seat is located at the upper end of the i'lush outlet. This may be, and preferably is of glass, as shown. but it might be of rubber or other material, as preferred.

A. hollow glass flush-valve will always insure a tight joint when seated, Where it c I 18 held by suction, and being perfectly Spherical in form, and thevalve-seat being I have conducted,

at a plane lover than the remainder of the 1 I oottom of the tank. when the tank is empty the valve invariably rolls by gravity to itsseat, where it is retained by suction until unseated.

Thus it will be seen that the tank itself constitutes a receptacle within the confines of which the flush-valve moves at will and unobstructed, when unseated, and until it graviates to its seat when the tank is empty where it is held by the suction of water in the usual manner.

The unseating' may be accomplished in any approved manner. ,I have shown a simple but efi'ective means of accomplishing this, although other means might, of course, be employed; but the form of construction I have shown consists in an arm L, which is hinged within the tank in any approved manner, and can be operated by a handle ll: located at one of the tank at the outer end of a rock-shift R, as shown in Fig". l, or by a handle extending out through forward end of the tank, as shown in 2. The lower end of this arm L terminates at a point little abovethe horizontal center of the flushingyalve, so that it has the efiect of kicking or rolling the valve over when-it is operated and the valve is to be nnseated, rather than engaging the valve from beneatln which necessitates lifting it bodily against the entire Weight of the water in the tank and the action of the suction from below, thus rendering it much easier to unseat the valve than would otherwise be the case.

The lever for unseating the flush-valve may be made in the form illustrated in Fig. 3. that is to say with a knuckle-joint L. which allows the lever to bend one direction to clear the i ll in case it gets beneath it when it is returning to its normal position.

1. A ilushingtank having an unobstructed interim vith a bottom which slopes to a common :ntlet, a buoyant valve capable of moving alt at will located within the confines of and adapted to seat itself a the outlet. and means connecteo with the tank whir automali'ally assimies a po sition out 01. rue path of the valve in seeking rec the outlet and which means when moved out ofits normal position engagesthe valve and moves away from the suction.

it laterally from the outlet and 2 A gravity flushing-tank open to the atmosphere, and having an unobstructed interior with a' bottom which slopes to a common outlet, a buoyant valve capable of an unobstructed interior tire flush-valve path of bottom sloping moving about'at will located Withinthe confines of the tank and adapted to seat itself at the outlet, and means connected with the tank which automatically assumes a position out of the path of the valve in seeking the outlet, and which means when moved out of its normal position engages the valve and moves it laterally from the outlet and away from the suction.

. 3. A flushing-tank, a buoyant valve capable of moving about at will located Withinthe confines of the tank, the tank having throughout the enmovement, with its to a common outlet, and means connected of the valve and outlet, and which when I with the tank which automatioa1ly takes a position out of the path moved out of its normal position engages the valve and moves it from the outlet and away from the suction.

at. A. flushing-tank having an unobstructed interior throughout the entire flush-valve path of movement with its bottom sloping to a common outlet, a buoyant valve capable of moving about at Will located within the confines of the tank, and

a lever pivoted within the tank out of the path of the valve and in position when moved to engage the valve laterally from the outlet and away from the suction, whereupon the lever returnsautomatically to a position alongside the inner wall of the tank.

in testimony whereof I aliix my signature, in the presence of two witnesses.

"WILLIAM B. CAMPBELL.

Vitnesses:

.l. K. Moo-1m, VERNON E, tonnes.

and move it 

